Central reposiroty capability - saves money

Central reposiroty capability - saves money

I just learned that Zoho Projects stores their doc's separately from Doc's.  For that matter, so does People, CRM. 
Is there a way to provide an option to store the documents in zoho doc's?

I realize to sell crm separately without zoho business and documents, you need a separate storage capability.
But if you do have zoho business and documents, tou should be able to store documents in Zoho documents.

Currently, you have to download and re-upload into zoho documents if you want a centeal loaction for all corporate doc's.

Not to mention the cost for disk space becomes exponential and very expensive.  I need a the same employee salary/benefits document in projects, HRIS and Zoho documents.
That's three times the sorage for one document.